速成墙板的宏观计算模型

Macro computational model of rapid wall

为掌握混凝土灌芯纤维石膏板(速成墙板)的受力特性,结合该墙板材料的具体特性,在已有的微观及宏观计算模型的基础上,基于纤维模型概念,建立了用于研究速成墙板等组合墙体的非线性分析的宏观纤维计算模型,即每个墙体单元由宏观纤维子单元和宏观剪切子单元组成,分别抵抗轴力和弯矩及剪力。推导了模型的单元刚度矩阵和各杆件的刚度。运用计算模型对4块满灌混凝土石膏板进行了推覆分析,并与试验结果进行了比较,表明该模型具有较好的精度,且计算简单。

To understand the mechanical property of the fiber plasterboard filled with reinforced concrete（ rapid wall） , according to the material characteristic and the idea of micro-and macro-model, a macro-model based on the idea of fiber model was presented, and was applied to analyze nonlinear characteristic of composite wall. The macro-model is composed of macro fiber element that only resist axis force and moment, and macro shear element that only resist shear force. Stiffness matrix of the model and element stiffness was developed. The elasto-plastic push-over was carried out to the four fiber plasterboard filled with reinforced concrete with the macro-model. The computational results are nearly equal to those obtained by experiments, and show that the model has relatively high accuracy and the calculation is simnle.